Summary of Significant Accounting Policies (Useful Life) (Details)	12 Months Ended
	Oct. 25, 2015
Minimum
Property, Plant and Equipment [Line Items]
Intangible assets estimated useful lives	1 year
Maximum
Property, Plant and Equipment [Line Items]
Intangible assets estimated useful lives	15 years
Building and improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Building and improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful life	30 years
Demonstration and manufacturing equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Demonstration and manufacturing equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful life	5 years
Software | Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Software | Maximum
Property, Plant and Equipment [Line Items]
Useful life	5 years
Furniture, fixtures and other equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful life	3 years
Furniture, fixtures and other equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful life	15 years
Land improvements | Maximum
Property, Plant and Equipment [Line Items]
Term of amortization	15 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Term of amortization	5 years